DOI: 10.1007/s00382-011-1052-y
Scopus记录号: 2-s2.0-84857442428
论文题名: Dependence of climate forcing and response on the altitude of black carbon aerosols
作者: Ban-Weiss G.A. ; Cao L. ; Bala G. ; Caldeira K.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 38, 期: 2017-05-06 起始页码: 897
结束页码: 911
语种: 英语
英文关键词: Aerosol
; Altitude
; Black carbon
; Climate change
; Climate sensitivity
; Fast response
; Feedback parameter
; Global warming
; Soot
英文摘要: Black carbon aerosols absorb solar radiation and decrease planetary albedo, and thus can contribute to climate warming. In this paper, the dependence of equilibrium climate response on the altitude of black carbon is explored using an atmospheric general circulation model coupled to a mixed layer ocean model. The simulations model aerosol direct and semi-direct effects, but not indirect effects. Aerosol concentrations are prescribed and not interactive. It is shown that climate response of black carbon is highly dependent on the altitude of the aerosol. As the altitude of black carbon increases, surface temperatures decrease; black carbon near the surface causes surface warming, whereas black carbon near the tropopause and in the stratosphere causes surface cooling. This cooling occurs despite increasing planetary absorption of sunlight (i. e. decreasing planetary albedo). We find that the trend in surface air temperature response versus the altitude of black carbon is consistent with our calculations of radiative forcing after the troposphere, stratosphere, and land surface have undergone rapid adjustment, calculated as "regressed" radiative forcing. The variation in climate response from black carbon at different altitudes occurs largely from different fast climate responses; temperature dependent feedbacks are not statistically distinguishable. Impacts of black carbon at various altitudes on the hydrological cycle are also discussed; black carbon in the lowest atmospheric layer increases precipitation despite reductions in solar radiation reaching the surface, whereas black carbon at higher altitudes decreases precipitation. © 2011 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55358
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Global Ecology, Carnegie Institution, 260 Panama Street, Stanford, CA 94305, United States; Divecha Center for Climate Change and Center for Atmospheric and Ocean Sciences, Indian Institute of Science, Bangalore 560012, India
Recommended Citation:
Ban-Weiss G.A.,Cao L.,Bala G.,et al. Dependence of climate forcing and response on the altitude of black carbon aerosols[J]. Climate Dynamics,2012-01-01,38(2017-05-06)